Location of _pages directory in 12.2 is $EBS_APPS_DEPLOYMENT_DIR/oacore/html/WEB-INF/classes/_pages
If any page needs to be compiled navigate to the below location
$FND_TOP/patch/115/bin and run perl ojspCompile.pl
To compile a single custom webpage follow the below procedure
--> Copy the custompage.jsp to $OA_HTML this is the location the script picks up the JSP page
-->cd $FND_TOP/patch/115/bin perl ojspCompile.pl --compile -s 'custompage.jsp' --flush
Thank you
